Peter Coffees 25 Killer Apps of All Time - 1982: AutoCAD

Proprietary drafting systems got a chill wind down their necks when Autodesk told people they could put a numeric coprocessor in that empty socket on a PC motherboard.

Microsoft's Vista has widely inspired the "Why do I need that?" question, which past "killer applications" have answered in different ways for different platforms during three decades of personal computing.